Eighteen staff subjects agreed to participate in the determination of IgG and IgA antibodies (n = 10 for the daycare center and n = 8 for the farm community), while all agreed (n = 11 for the daycare center and n = 24 for the farm community) to report about COVID-19 positivity (NHS measurement), symptoms, and vaccine side effects. This evidence concerns the gene CD79A and COVID-19.